Those are some cool whiteboards.
A day in the life of Kripke, from the Season 5 DVD. Get it while it's hot.
I would kill for a transcript of those whiteboards.
In the meantime...
Dear Supernatural writers: It's Cas, not Cass. That second 's' you insist on using doesn't make any sense. Fandom has made up its collective mind on this one, so you'd better jump aboard, fuckers.
Hugs and kisses,
bree_black